1991-02-01

An Antilock Braking System for Sports Utility Vehicles and Light Trucks 910698

An electronic ABS with integrated brake booster is described in the paper. The system has been developed with special regard to the application in 4WD-Off-Road-Vehicles. The special requirements resulting from that are outlined, followed by description of the system and components fulfilling these requirements: a brake booster with integrated ABS modulating valves, an electric pump to generate and an accumulator to store the hydraulic energy required for brake boost and ABS modulation, inductive sensors to pick up wheelspeeds and an ECU to monitor and control the total system and to interface with external diagnostic devices.Some special features of the ABS control strategy are outlined which enable this system to remain operative under all conditions without any exception. Furthermore description is made of the system safety concept and the testwork carried out to prove electro-magnetic compatibility.

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